Hash used for caching, for more info click here . Note : the usual hash generation algorithm cannot be used in this case, please re-use the webPage . hash field returned by a previous call to the method, or pass 0 if this is the first call or if the previous call did not return a webPage .
Hash used for caching, for more info click here . Note : the usual hash generation algorithm cannot be used in this case, please re-use the webPage . hash field returned by a previous call to the method, or pass 0 if this is the first call or if the previous call did not return a webPage .